<template>
  <form-item-wrapper
    :designer="designer"
    :field="field"
    :rules="rules"
    :design-state="designState"
    :parent-widget="parentWidget"
    :parent-list="parentList"
    :index-of-parent-list="indexOfParentList"
    :sub-form-row-index="subFormRowIndex"
    :sub-form-col-index="subFormColIndex"
    :sub-form-row-id="subFormRowId"
  >
    <el-checkbox-group
      ref="fieldEditor"
      v-model="fieldModel"
      :disabled="field.options.disabled"
      :size="widgetSize"
      @change="handleChangeEvent"
    >
      <template v-if="!!field.options.buttonStyle">
        <el-checkbox-button
          v-for="(item, index) in field.options.optionItems"
          :key="index"
          :label="item.value"
          :disabled="item.disabled"
          :border="field.options.border"
          :style="{ display: field.options.displayStyle }"
          >{{ item.label }}</el-checkbox-button
        >
      </template>
      <template v-else>
        <el-checkbox
          v-for="(item, index) in field.options.optionItems"
          :key="index"
          :label="item.value"
          :disabled="item.disabled"
          :border="field.options.border"
          :style="{ display: field.options.displayStyle }"
          >{{ item.label }}</el-checkbox
        >
      </template>
    </el-checkbox-group>
  </form-item-wrapper>
</template>

<script>
import FormItemWrapper from "./form-item-wrapper.vue";
import emitter from "@/utils/emitter";
import i18n from "@/utils/i18n";
import fieldMixin from "@/components/form-designer/form-widget/field-widget/fieldMixin";

export default {
  name: "checkbox-widget",
  componentName: "FieldWidget", //必须固定为FieldWidget，用于接收父级组件的broadcast事件
  mixins: [emitter, fieldMixin, i18n],
  props: {
    field: Object,
    parentWidget: Object,
    parentList: Array,
    indexOfParentList: Number,
    designer: Object,

    designState: {
      type: Boolean,
      default: false
    },

    subFormRowIndex: {
      /* 子表单组件行索引，从0开始计数 */ type: Number,
      default: -1
    },
    subFormColIndex: {
      /* 子表单组件列索引，从0开始计数 */ type: Number,
      default: -1
    },
    subFormRowId: {
      /* 子表单组件行Id，唯一id且不可变 */ type: String,
      default: ""
    }
  },
  components: {
    FormItemWrapper
  },
  data() {
    return {
      oldFieldValue: null, //field组件change之前的值
      fieldModel: null,
      rules: []
    };
  },
  computed: {},
  beforeCreate() {
    /* 这里不能访问方法和属性！！ */
  },

  created() {
    /* 注意：子组件mounted在父组件created之后、父组件mounted之前触发，故子组件mounted需要用到的prop
         需要在父组件created中初始化！！ */
    this.initOptionItems();
    this.initFieldModel();
    this.registerToRefList();
    this.initEventHandler();
    this.buildFieldRules();

    this.handleOnCreated();
  },

  mounted() {
    this.handleOnMounted();
  },

  beforeUnmount() {
    this.unregisterFromRefList();
  },

  methods: {}
};
</script>

<style lang="scss" scoped>
@import "../../../../style/global.scss"; /* form-item-wrapper已引入，还需要重复引入吗？ */
</style>
